Not sure if this helps, but I just installed Pheonix to try it out (never used it before) and got this error right off the bat. I did nothing except install it and try to log in and it gives me that error.

Just downloaded on Lion, and it crashed right off the bat. It ran the next time, but won't accept my login. It just keeps saying LJ returned an error. This is the third client I've tried on my brand new MacBook pro. Looked the most promising, but alas...